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Photo-induced exciton generation in polyvinylpyrrolidone encapsulated Ag2S core-shells: Electrochemical deposition, regular shape and high order of particle size distribution
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10.1063/1.4772597
/content/aip/journal/jap/112/12/10.1063/1.4772597
http://aip.metastore.ingenta.com/content/aip/journal/jap/112/12/10.1063/1.4772597
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Chronoamperometric deposition of PVP encapsulated Ag2S films (inset: LSV curve)

Image of FIG. 2.
FIG. 2.

HRTEM images of PVP encapsulated Ag2S thin films: (a) low magnification image showing the complete core-shell, (b) two overlapped core-shell structures, (c) interface of crystalline Ag2S and amorphous PVP, (d) lattice fringes showing the “d” value.

Image of FIG. 3.
FIG. 3.

(a) FESEM image showing nearly spherical particles, (b) particle size distribution curve, (c) HRXRD pattern, and (d) UV-vis-NIR absorption spectrum (inset: magnified spectrum between 950 and 1050 nm) of the electrodeposited Ag2S-PVP thin films.

Image of FIG. 4.
FIG. 4.

(a) NIR-PL spectrum of the PVP encapsulated Ag2S film showing a broad emission peak at around 1040 nm and (b) FTIR spectrum of the deposited material.

Image of FIG. 5.
FIG. 5.

(a) Schematic for frequency switching measurement, (b) photo-induced frequency switching characteristics of the film due to excitonic transition, (c) energy diagram for bare Ag2S NPs, and (d) energy diagram for PVP encapsulated Ag2S NPs.

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/content/aip/journal/jap/112/12/10.1063/1.4772597
2012-12-28
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Photo-induced exciton generation in polyvinylpyrrolidone encapsulated Ag2S core-shells: Electrochemical deposition, regular shape and high order of particle size distribution
http://aip.metastore.ingenta.com/content/aip/journal/jap/112/12/10.1063/1.4772597
10.1063/1.4772597
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